AERO-THERMO-MECHANICAL CHARACTERISTICS OF SHAPE MEMORY ALLOY HYBRID COMPOSITE PANELS WITH GEOMETRIC IMPERFECTION

A new nonlinear finite element model is presented for the static aero-thermal deflection of a shape memory alloy hybrid composite panel with initial geometric imperfection and under the combined effect of thermal and aerodynamic loads. The nonlinear governing equations are obtained using Marguerre curved plate theory and the principle of virtual work. The effect of large deflection is included in the formulation through the von Karman nonlinear strain-displacement relations. The aerodynamic pressure is modeled using the quasi-steady first-order piston theory. The Newton-Raphson iteration method is employed to obtain the nonlinear aero-thermal deflections, while an Eigen value problem is solved at each temperature and static aerodynamic load to predict the free vibration frequencies about the deflected equilibrium position. Finally, the nonlinear deflection and free vibration characteristics of a shape memory alloy hybrid composite panel are presented, illustrating the effect of shape memory alloy fiber embeddings, temperature rise, dynamic pressure, and initial geometric imperfection on the panel response.

[1]  Seong Hwan Moon,et al.  Vibration of thermally post-buckled composite plates embedded with shape memory alloy fibers , 2004 .

[2]  J. Girish,et al.  Thermal postbuckled vibrations of symmetrically laminated composite plates with initial geometric imperfections , 2005 .

[3]  Victor Birman,et al.  Review of Mechanics of Shape Memory Alloy Structures , 1997 .

[4]  M. R. Eslami,et al.  Thermal Buckling of Imperfect Functionally Graded Cylindrical Shells Based on the Wan–Donnell Model , 2006 .

[5]  M. R. Eslami,et al.  Thermal buckling of imperfect functionally graded plates , 2006 .

[6]  Earl A. Thornton,et al.  Thermal Buckling of Plates and Shells , 1993 .

[7]  Mohammad Tawfik,et al.  Thermal Buckling and Nonlinear Flutter Behavior of Functionally Graded Material Panels , 2007 .

[8]  W. B. Cross,et al.  Nitinol characterization study , 1969 .

[9]  Mohammad Tawfik,et al.  Thermoacoustic Random Response of Shape Memory Alloy Hybrid Composite Plates , 2008 .

[10]  Hui-Shen Shen,et al.  Thermal postbuckling behavior of shear deformable FGM plates with temperature-dependent properties , 2007 .

[11]  Hong Hee Yoo,et al.  NONLINEAR FLUTTER OF SHAPE MEMORY ALLOY HYBRID COMPOSITE PANELS SUBJECT TO THERMAL AND RANDOM ACOUSTIC LOADS , 2008 .

[12]  C. Mei,et al.  Nonlinear Flutter of Composite Panels Under Yawed Supersonic Flow Using Finite Elements , 1999 .

[13]  Mohammad Tawfik,et al.  Non-linear panel flutter for temperature-dependent functionally graded material panels , 2007 .

[14]  Chuh Mei,et al.  THERMAL POSTBUCKLING OF COMPOSITE PLATES USING THE FINITE ELEMENT MODAL COORDINATE METHOD , 1999 .

[15]  Lin Wang,et al.  RESEARCH ON SOUND WAVE PROPAGATION THROUGH A COMBUSTION TEMPERATURE-FIELD IN A POWER BOILER , 2008 .

[16]  Chuh Mei,et al.  Coexisting thermal postbuckling of composite plates with initial imperfections using finite element modal method , 1996 .

[17]  T. R. Tauchert,et al.  Thermally Induced Flexure, Buckling, and Vibration of Plates , 1991 .

[18]  J. Ro,et al.  Thermal post-buckling and aeroelastic behaviour of shape memory alloy reinforced plates , 2002 .

[19]  Chuh Mei,et al.  Finite element analysis of thermal post-buckling and vibrations of thermally buckled composite plates , 1991 .

[20]  Jagannath Mazumdar,et al.  Vibration and buckling of plates at elevated temperatures , 1980 .